CN220159235U - Distribution and film forming structure for falling film evaporator - Google Patents
Distribution and film forming structure for falling film evaporator Download PDFInfo
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- CN220159235U CN220159235U CN202320719867.7U CN202320719867U CN220159235U CN 220159235 U CN220159235 U CN 220159235U CN 202320719867 U CN202320719867 U CN 202320719867U CN 220159235 U CN220159235 U CN 220159235U
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- evaporator
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- overflow
- film forming
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- 238000009826 distribution Methods 0.000 title claims abstract description 47
- 239000010408 film Substances 0.000 title claims abstract description 34
- 239000011552 falling film Substances 0.000 title claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 23
- 239000007787 solid Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims 4
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 8
- 239000004744 fabric Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- BEIGFKLRGRRJJA-JLHYYAGUSA-O 2-(2f-benzothiazolyl)-5-styryl-3-(4f-phthalhydrazidyl)tetrazolium chloride Chemical compound C=1C=C2C(=O)NNC(=O)C2=CC=1[N+](N(N=1)C=2SC3=CC=CC=C3N=2)=NC=1\C=C\C1=CC=CC=C1 BEIGFKLRGRRJJA-JLHYYAGUSA-O 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a distribution and film forming structure for a falling film evaporator, which comprises an evaporator cylinder body and is characterized in that: the evaporator comprises an evaporator cylinder body, and is characterized by further comprising a spray head, a distribution plate and an overflow film forming assembly, wherein a feed pipe is arranged on the side wall of the evaporator cylinder body, the end part of the feed pipe stretches into the evaporator cylinder body and is positioned at the center line of the evaporator cylinder body, the spray head positioned on the center line of the evaporator cylinder body is arranged on the feed pipe, and the distribution plate and the overflow film forming assembly are sequentially arranged in the evaporator cylinder body at the lower part of the spray head from top to bottom. The utility model has the advantages of scientific and reasonable structural design, capability of improving the reaction efficiency, difficult blockage, reduced energy consumption, reduced production cost and easy realization, and is a distribution and film forming structure for the falling film evaporator with higher innovation.
Description
Technical Field
The utility model belongs to the field of chemical reaction equipment, and relates to a distribution and film forming structure, in particular to a distribution and film forming structure for a falling film evaporator.
Background
The falling film evaporator is one of a plurality of evaporators, has high heat transfer efficiency, small temperature difference loss, low energy consumption and small occupied area, and is widely applicable to industries such as chemical industry, medicine, light industry, food, petrochemical industry, metallurgy, medicines and the like. The falling film evaporation is to add the feed liquid from the upper pipe box of the heating chamber of the falling film evaporator, uniformly distribute the feed liquid into each heat exchange pipe through the liquid distribution and film forming structure, and uniformly flow in a film shape from top to bottom under the action of gravity, vacuum induction and air flow.
Falling film evaporators are commonly used for evaporating materials with relatively high concentration and viscosity, and for a falling film evaporator, the overall performance of the falling film evaporator is greatly dependent on the film distribution structure of the falling film evaporator. Traditional material is the mode entering of flowing in from falling film evaporator one side, causes falling film evaporator one side material too much easily, and the problem that another side material is too little leads to the heat transfer pipe to be close to feed inlet side material too high, takes place to block up easily, and the heat transfer pipe of its opposite side is not fully utilized simultaneously, has reduced the utilization ratio of energy.
Therefore, the design of the distribution and film forming structure for continuous feeding of the high-viscosity materials has important significance for improving the reaction efficiency, improving the automation level, reducing the energy consumption, reducing the production cost and the like.
Disclosure of Invention
The utility model aims to provide a distribution and film forming structure for a falling film evaporator, which has scientific and reasonable structural design, can improve the reaction efficiency, is not easy to block, reduces the energy consumption, reduces the production cost and is easy to realize.
The utility model solves the technical problems by the following technical proposal:
a distribution and film forming structure for falling film evaporator, includes the evaporator barrel, its characterized in that: the evaporator comprises an evaporator cylinder body, and is characterized by further comprising a spray head, a distribution plate and an overflow film forming assembly, wherein a feed pipe is arranged on the side wall of the evaporator cylinder body, the end part of the feed pipe stretches into the evaporator cylinder body and is positioned at the center line of the evaporator cylinder body, the spray head positioned on the center line of the evaporator cylinder body is arranged on the feed pipe, and the distribution plate and the overflow film forming assembly are sequentially arranged in the evaporator cylinder body at the lower part of the spray head from top to bottom.
Moreover, the spray head is a solid spray head.
And the distribution plate consists of a distribution plate body, material leakage small holes uniformly distributed on the distribution plate body at intervals and a cofferdam vertically upwards arranged outside the distribution plate body.
And the height of the cofferdam is 10-20mm.
And the overflow film forming assembly consists of a tube plate and overflow tubes, wherein the overflow tubes are uniformly distributed on the tube plate at intervals, the upper ends of the overflow tubes extend out of the upper end face of the tube plate, the lower ends of the overflow tubes extend out of the lower end face of the tube plate, the extending parts of the lower ends are butted on the heat exchange tubes at the lower part, and the overflow tubes are arranged in a staggered manner with the leakage small holes on the distribution plate.
And a sawtooth-shaped or square groove-shaped notch is arranged at the upper port of the overflow pipe.
The utility model has the advantages and beneficial effects that:
1. this a distribution and film forming structure for falling film evaporator sprays the material on cloth liquid dish through solid shower nozzle, cloth liquid dish is gone up and is leaked material aperture and heat exchange tube staggered distribution, and the material flows in on the tube sheet from cloth liquid dish is gone up to leak material aperture, overflows on the tube sheet surface, flows in the heat exchange tube along overflow pipe inner wall, makes material and heat exchange tube carry out abundant contact to effectively avoided the material only to get into the problem that the heat exchange efficiency who takes place is low and to the energy utilization is low of partial heat exchange tube, make the even entering of material react in the heat exchange tube.
2. The distribution and film forming structure for the falling film evaporator avoids the problem that the distribution effect is influenced due to the fact that materials fall from the edge through the arrangement of the cofferdam on the liquid distribution disc.
3. The distribution and film forming structure for the falling film evaporator has the advantages that the upper port of the overflow pipe is designed into the structure of the zigzag or square groove-shaped notch, compared with a planar structure, the zigzag or square groove-shaped structure not only can enable materials to be uniformly distributed around the overflow pipe, but also enables flow between the overflow pipes to be more uniform, and the problems of dry wall, performance reduction and the like caused by uneven distribution are avoided.
4. The utility model has the advantages of scientific and reasonable structural design, capability of improving the reaction efficiency, difficult blockage, reduced energy consumption, reduced production cost and easy realization, and is a distribution and film forming structure for the falling film evaporator with higher innovation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
fig. 3 is a B-B cross-sectional view of fig. 1.
Reference numerals
1-spray head, 2-distribution plate, 3-overflow pipe, 4-heat exchange pipe, 5-small hole for leakage, 6-cofferdam and 7-tube plate.
Detailed Description
The utility model is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.
A distribution and film forming structure for falling film evaporator includes the evaporator cylinder, its innovation lies in: the evaporator comprises an evaporator cylinder body, and is characterized by further comprising a spray head 1, a distribution plate 2 and an overflow film forming assembly, wherein a feed pipe is arranged on the side wall of the evaporator cylinder body, the end part of the feed pipe stretches into the evaporator cylinder body and is positioned at the center line of the evaporator cylinder body, the spray head positioned on the center line of the evaporator cylinder body is arranged on the feed pipe, and the distribution plate and the overflow film forming assembly are sequentially arranged in the evaporator cylinder body at the lower part of the spray head from top to bottom.
The spray head is a solid spray head. Compared with the hollow spray head, the solid spray head has better dispersion effect at each position of the cross section. I.e. after the liquid has been ejected, there are droplets at various positions of the cross-section. The solid spray head was manufactured by spay spray systems (Shanghai) limited under model SPIRALJET, SS, BSPT.
The distribution plate consists of a distribution plate body, material leakage small holes 5 which are uniformly distributed on the distribution plate body at intervals and a cofferdam 6 which is vertically arranged upwards outside the distribution plate body. The height of the cofferdam is 10-20mm.
The overflow film forming assembly consists of a tube plate 7 and overflow tubes 3, wherein the overflow tubes are uniformly distributed on the tube plate at intervals, the upper ends of the overflow tubes extend out of the upper end face of the tube plate, the lower ends of the overflow tubes extend out of the lower end face of the tube plate, the extending parts of the lower ends are butted on the heat exchange tubes 4 at the lower part in a welding mode, and the overflow tubes are arranged in a staggered mode with the leakage small holes on the distribution plate.
The upper port of the overflow pipe is provided with a sawtooth-shaped or square groove-shaped notch. Compared with a plane structure, the structure has the advantages that the zigzag or square groove-shaped structure not only can enable materials to be uniformly distributed around the overflow pipes, but also enables flow among all the overflow pipes to be more average, and the problems of dry wall, performance reduction and the like caused by uneven distribution are avoided.
The distribution and film forming structure for the falling film evaporator has scientific and reasonable structural design and high flexibility, and the solid spray head is used for spraying materials, so that the material leakage small holes and the heat exchange tubes are distributed in a staggered manner, the uniform distribution of the materials is realized, and the materials can uniformly enter the heat exchange tubes for reaction.
Although the embodiments of the present utility model and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the embodiments and the disclosure of the drawings.
Claims (5)
1. A distribution and film forming structure for falling film evaporator, includes the evaporator barrel, its characterized in that: the evaporator comprises an evaporator cylinder body, a spray head, a distribution plate and an overflow film forming assembly, wherein the side wall of the evaporator cylinder body is provided with a feed pipe, the end part of the feed pipe stretches into the evaporator cylinder body and is positioned at the central line of the evaporator cylinder body, the spray head positioned on the central line of the evaporator cylinder body is arranged on the feed pipe, and the distribution plate and the overflow film forming assembly are sequentially arranged in the evaporator cylinder body at the lower part of the spray head from top to bottom;
the distributing plate consists of a distributing plate body, material leakage small holes which are uniformly distributed on the distributing plate body at intervals, and a cofferdam which is vertically upwards arranged outside the distributing plate body.
2. A distribution and film formation structure for a falling film evaporator according to claim 1, wherein: the spray head is a solid spray head.
3. A distribution and film formation structure for a falling film evaporator according to claim 1, wherein: the height of the cofferdam is 10-20mm.
4. A distribution and film formation structure for a falling film evaporator according to claim 1, wherein: the overflow film forming assembly consists of a tube plate and overflow tubes, wherein the overflow tubes are uniformly distributed on the tube plate at intervals, the upper ends of the overflow tubes extend out of the upper end face of the tube plate, the lower ends of the overflow tubes extend out of the lower end face of the tube plate, the extending parts of the lower ends are butted on the heat exchange tubes at the lower parts, and the overflow tubes are arranged in a staggered mode with the leakage small holes on the distribution plate.
5. The distribution and film formation structure for a falling film evaporator according to claim 4, wherein: the upper port of the overflow pipe is provided with a sawtooth-shaped or square groove-shaped notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320719867.7U CN220159235U (en) | 2023-04-04 | 2023-04-04 | Distribution and film forming structure for falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320719867.7U CN220159235U (en) | 2023-04-04 | 2023-04-04 | Distribution and film forming structure for falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220159235U true CN220159235U (en) | 2023-12-12 |
Family
ID=89052647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320719867.7U Active CN220159235U (en) | 2023-04-04 | 2023-04-04 | Distribution and film forming structure for falling film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220159235U (en) |
-
2023
- 2023-04-04 CN CN202320719867.7U patent/CN220159235U/en active Active
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